What is the fastest 250cc dirt bike?

The fastest 250cc dirt bike is often considered to be the Yamaha YZ250, known for its powerful two-stroke engine and lightweight design, which allows for quick acceleration and high top speeds. Another strong contender is the KTM 250 SX-F, recognized for its advanced technology and performance on the track. Both bikes are popular among competitive riders for their speed and agility, making them top choices in the 250cc category. Ultimately, the fastest bike can vary based on rider skill and specific track conditions.